ultramicroscopicEnglishOxford New American Dictionaryultramicroscopic /ˌəltrəˌmīkrəˈskäpik, ˌəltrəˌmaɪkrəˈskɑpɪk / ▸ adjective too small to be seen by an ordinary optical microscope. ▪ relating to an ultramicroscope.
EnglishOxford New American DictionaryEnglishOxford New American Dictionary
EnglishOxford New American Dictionary